A kind of preparation method of zinc-glycine complex

The invention provides the preparation method of a kind of zinc-glycine complex, described preparation method comprises the following steps: glycine and Zinc vitriol are dissolved in the water, add a small amount of iron powder and few drops concentrated sulphuric acid, rotational response at 70 90 DEG C, it is subsequently cooled at 50 65 DEG C sucking filtration after crystallization, obtains crystalline solid, by crystalline solid described in absolute ethanol washing for several times, naturally dry, obtain described zinc-glycine complex.The method crystallization temperature 50 65 DEG C, higher than Existing methods crystallization temperature 25 DEG C, decreases time used by decrease temperature crystalline process and refrigeration cool-down energy consumption；The zinc-glycine complex complex productivity simultaneously obtained by the method is high, and product is few containing water of crystallization, and product follow-up drying energy consumption is low.